在一个非相互作用的可整合模型中,开放系统固态热化
Krzysztof Ptaszyński1,2, Massimiliano Esposito1
1University of Luxembourg, Complex Systems and Statistical Mechanics, Department of Physics and Materials Science, L-1511 Luxembourg, Luxembourg.
Physical review. E
|February 20, 2025
概括
系统可观测物在与浴相结合的可整合量子系统中热化,即使是在典型的固有状态中. 这种弱固态热化发生,除非强的合导致局部化,挑战非整合性作为热化的唯一驱动因素.
科学领域:
- 量子力学就是量子力学.
- 统计力学就是统计力学.
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 在孤立量子系统中研究热化对于理解统计力学至关重要.
- 固态热化假设 (ETH) 解释了复杂量子系统中的热化.
研究的目的:
- 在一个可集成的开放量子系统中探索热化,从单个费米离子水平与费米离子浴相结合.
- 调查这些系统中的弱固态热化及其对合强度的依赖.
- 为了确定浴在典型的自身状态中初始化时是否发生热化.
主要方法:
- 对单个费米离子水平与宏观费米离子浴相结合的分析.
- 检查组合哈密尔顿式的典型固态中的系统可观测值.
- 系统灭后对系统动态的研究 汉密尔顿式.
主要成果:
- 系统可观测物在典型的固态中表现出热化,这种现象被称为弱固态热化.
- 即使在这种完全可集成的系统中,热化仍然存在,除非通过强合的局部化来抑制.
- 系统占用率与灭后的热值相适应,热化来自于典型的固态中的浴室.
结论:
- 不整合性不是量子系统中热化的唯一要求.
- 开放的量子系统和弱固态热化为统计力学提供了互补的观点.
- 需要进一步的研究来充分阐明统计力学的出现.
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